› added 6 years ago

100

TIL radioactive cocaine is a diagnostic tool used for Parkinson's Disease

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JGDk TIL the Columbian army had a pop singer record a song with Morse Code hidden in the chorus so their soldiers in FARC rebel camps would know to expect a rescue attempt. They knew the rebels listened to a particular radio station and they had the DJ play it repeatedly
0w01j TIL that bone marrow donation is much less painful than thought. 79% of bone marrow transplants are now done with basically a more complex version of a blood transfusion. The other 21% is the traditional large needle into your bones, but it's done under anesthesia.
EggOP TIL the Ute people of Utah used to use fossilized trilobites as amulets to protect against bullets and diphtheria, and they correctly identified them as a marine creature.
E1rWX TIL On a trip to Nepal, Apollo astronaut Stu Roosa met Nepalese who believe the spirits of their dead reside on the Moon. Roosa could not understand why a few of the local citizens treated him like a god, nor why they were distressed when he told them he saw no one else on the Moon
Y7m9r TIL of Goodhart's law which states "When a measure becomes a target, it ceases to be a good measure" due to people gaming the outcome.